In one study on the effect of coconut oil on hair growth, 140 subjects who acknowledged being long-time coconut oil users had their hair growth compared with those of 140 people who had never used coconut oil. In a second study, 80 subjects were randomly chosen to use coconut oil and 80 were chosen to use a placebo. Identify the types of studies performed.

The first study was an observational study whereas the second was a controlled experiment.

The first study was a controlled experiment whereas the second was an observational study.

Both studies were controlled experiments.

Both studies were observational studies.

Each study was part controlled experiment and part observational study.

Answer:

răspuns corect :a 2x -8y +3

Step-by-step explanation:

dami coroana te rog

Answer:

Manisha spent 8 minutes and 24 seconds in a week climibing the stairs of her house.

Step-by-step explanation: (totally my work, not copied)

Convert seconds to minutes.

60x8=480

60x9=540

so, 8 minutes

Find the remaining seconds.

504-480=24

Add remaining seconds to minutes

24sec+8min=8min24sec

So hence, your answer is 8 Minutes and 24 Seconds

Manisha spent 8 minutes and 24 seconds in a week climbing the stair of her house.

Thanks!

Mark me brainliest!

~[tex]FieryAnswererGT[/tex]~

Answer:

Not possible.

Step-by-step explanation:

We would need another equation to solve this problem as we have 2 variables.

Answer:

Exactly one solution.

Step-by-step explanation:

When you simplify and combine like terms, you end up with 23y=0. This means that y=0 is the one and only solution.

Answer:

B

Step-by-step explanation:

23y+50+27y=50y+50

find your same like terms and solve

23y+27y+51y

51y+50=50y+50

51y +50y=50+50

you would be left with one solution

101y=100

Answer:

n = 6 probably

Step-by-step explanation:

10 + I 10n + 6 I+ = 76

since " I   I " means it will always be positive we can kinda just ignore it

10 + 10n + 6 = 76

16 + 10n = 76

10n = 76 - 16

10n = 60

n = 6

Answer:

[tex]H = \frac{V}{\pi r^{2} }[/tex]

Step-by-step explanation:

So long as you have the volume and radius of a cylinder, it should be easy!

Simply divide the volume (V) of the cylinder by Pi Radius Squared ([tex]\pi r^{2}[/tex]).

That is the formula for finding the height of a cylinder!

I hope this helped!

Answer:

True statement

Step-by-step explanation:

400/10 = 40

so we can say the 40 is a tenth 400

The amount that he owes after one year is 1792.09 dollars. Then the correct option is C.

The amount of something is expressed as if it is a part of the total which is a hundred. The ratio can be expressed as a fraction of 100. The word percent means per 100. It is represented by the symbol ‘%’.

Rodney owes $1,541.05 on his credit card.

His card has an APR of 16.29%, compounded monthly.

Assuming that he makes no payments and no purchases.

He owes after one year will be

Amount = 1541.05 × 1.1629

Amount = 1792.087 ≅ 1792.09

More about the percentage link is given below.

https://brainly.com/question/8011401

Answer:

It rained 3/8 cm more on Tuesday than Monday.

Step-by-step explanation:

What I first did is convert the fraction 3/4 into 6/8 (multiply both sides by two) so I could get a common numerator to solve the two fractions. Then, I gave one whole from the 2 wholes in 2 1/8 to 1/8 to make it easy to subtract with 6/8 (I wuldn't like to do 1/8-6-/8) and made it into 9/8. Then it's simple subtraction (oh yes and don't forget to turn the 2 into 1 since it lost a whole) and voila! 3/8 cm

Answer:

784m^2

Step-by-step explanation:

is a rectangle with sides of 40m and 20m, in the upper right corner a right triangle has been removed with the legs of: 40 - 32 = 8m and 20 - 16 = 4m, we find the area of ​​the rectangle (b * h).

40 * 20 = 800m ^ 2, then we find the area of ​​the right triangle

1/2 b * h: 1/2 8 * 4 = 16 m ^ 2.

we remove the area of ​​the triangle from the rectangle and we have the area of ​​the figure: 800 - 16 = 784m^2

Answer:6 and 3/10 kilometers

step-by-step explanation:

7/10 times 9 = 63/10

6 and 3/10 kilometer

Answer:

6 and 3/10 kilometers

Step-by-step explanation:

hope this help'<'

The scatterplot shows that the prediction of the height in centimeters of a student with a weight of 64 kilograms is 156cm.

It should be noted that a scatterplot simply means a type of data display which shows the relationship between two numerical variables.

From the complete question, the prediction of the height in centimeters of a student with a weight of 64 kilograms is 156cm. This was illustrated in the scatterplot.

Learn more about scatterplot on:

https://brainly.com/question/6592115

Answer:

+ 4

Step-by-step explanation:

The pattern of the expression is +4 as you see it goes 5 to 9

5 + 4=9

And if i'm correct the number after 9 will be 13 and it is

9 + 4=13

next it will be a 17 because 13 + 4=17

The next following numbers of the pattern will be 21  25  29  33  37 41 45

Hope it helps have a great day:)

Answer:

angle v is 105

Step-by-step explanation:

the triangles are similar, so the angles will be the same so both triangles, the sum of the angles for a triangle must add up to 180 degrees

Answer:

Total, T = (300s+200b+42d) mg

Step-by-step explanation:

Given that,

Kayson mixes 300 mL spinach, 200 mL of berries, and 42 mL of dressing to make a salad.

There are s mg of vitamin C per mL of spinach, b mg per mL of berries, and d mg per mL of dressing.

In 300 mL of spinach vitamin C is = (300 s)mg

In 200 mL of berries vitamin C is = (200 b)mg

In 42 mL of salad vitamin C is = (42 d)mg

It means that, total mg of vitamin C is :

Total, T = (300s+200b+42d) mg

Hence, this is the required solution.

Answer:

261

Step-by-step explanation:

a²+b² = c²

Given, a = ?

b = 24

c = 262

a² = c² - b²

a²= 262² - 24²

a² = 68644 - 576

a² = 68068

a = √68068

∴ a=  260.89844

can be said as 261

3 huts are built by 5 people in 21 days.

So 1 hut is built by 5 people in 7 days.

That is to say, 1 hut requires 5*7 = 35 man-days.

Which means 6 huts need 6*35 = 210 man-days.

If the time available is 15 days, 6 huts will need 210 man-days/15 days = 14 people.

Answer = 14 people.

Sangeetha got Rs. 412, Manish got Rs. 103 and the difference is Rs. 309

Data;

To calculated the amount Sangeetha got, let's solve the ratio

[tex]4 + 1 = 5\\\frac{4}{5} * 515 = 412[/tex]

Sangeetha got Rs 412.

To calculate the amount Manish got we can either subtract 412 from 515 or we find 1/5 of 515

[tex]\frac{1}{5} * 515 = 103[/tex]

The difference in the amount is calculated by subtracting 412 from 103

[tex]412 - 103 = 309[/tex]

Learn more on ratios here;

https://brainly.com/question/1781657

Answer:

so we have to find what percentage 369 is of 1230

369/1230=0.3

so they save 0.7 or 70%

Hope This Helps!!!

Answer:

Step-by-step explanation:

1,230/569= 3.3 or 87-89%

After the value of y is 4 does the exponential function definitely surpasses the linear function.  

What is exponential function?

A function whose value is a constant raised to the power of the argument, especially the function where the constant is e.

Given

Use the graphing calculator to graph these functions: y1= 2x ; y2= 2x2 ; y3 = 2x.

As we can see y1=2x is a linear function and y3=2^x is a exponential function.

The graphs of y1 and y3 meet at 2 points i.e. at (1,2) and (2,4)

When you graph the equations their point of intersection is (2,4).

Therefore, when y > 4, the exponential function surpasses the linear function.

To know more about linear function click the link given below.

https://brainly.com/question/6714976

Answer:

4

Step-by-step explanation:

edge 2022

-1/4 times 16 = -4.

-1/4 times -8 = 2.

-4x + 2

Answer:

5/2

Step-by-step explanation:

Divide both sides by the same factor then simplify

Answer:

m=2.5

Step-by-step explanation:

10m=25

m=25/10

m=5/2

m=2.5

Answer: 4/3

Step-by-step explanation:

Answer:

$5 per person

Step-by-step explanation:

3 people. 5 dollars each. 15 dollar admission. 3x5 is 15

i need more info cmon man

Step-by-step explanation:

ur  mom

Answer:

1.-(-2/15)=2/15

2.-(-13/17)=13/17

Step-by-step explanation:

Answer:

1 - 3 (1 quarter is 25 and a dime is 10, so, 3.)

4 - 10

6 - 15

14 - 33

Step-by-step explanation:

Answer:

.70 hope this helps

Step-by-step explanation:

Answer:

x = 8

Step-by-step explanation:

Since this is a rectangle, we know that each corner's angle is 90 degrees. (The box thing at the bottom right shows this.)

Since the two angles that make up angle E sum up to 90, we can make an equation:

(9x - 6) + (2x + 8) = 90

11x + 2 = 90

11x = 88

x = 8